Make Babel fall back to nl for fy-NL. Bug 596981.

apps/input/helpers.py

@@ -8,7 +8,7 @@
 from django.utils.encoding import smart_str
 from django.utils.http import urlencode
 
-from babel import Locale
+from babel import Locale, UnknownLocaleError
 from babel.dates import format_datetime
 from babel.support import Format
 from jingo import register
@@ -27,7 +27,11 @@
 
 def _get_format():
     lang = translation.get_language()
-    locale = Locale(translation.to_locale(lang))
+    try:
+        locale = Locale(translation.to_locale(lang))
+    except UnknownLocaleError:
+        locale = Locale(translation.to_locale(settings.BABEL_FALLBACK.get(
+            lang, 'en-US')))
     return Format(locale)
 
 

settings.py

@@ -68,12 +68,13 @@
 USE_L10N = True
 
 # Accepted locales
-# ar, he: bug 580573
 INPUT_LANGUAGES = ('ar', 'bg', 'ca', 'cs', 'da', 'de', 'el', 'en-US', 'es',
-                   'fr', 'gl', 'he', 'hu', 'id', 'it', 'ko', 'nb-NO', 'nl',
-                   'pl', 'pt-PT', 'ru', 'sk', 'sq', 'uk', 'vi', 'zh-CN',
+                   'fr', 'fy-NL', 'gl', 'he', 'hu', 'id', 'it', 'ko', 'nb-NO',
+                   'nl', 'pl', 'pt-PT', 'ru', 'sk', 'sq', 'uk', 'vi', 'zh-CN',
                    'zh-TW')
 RTL_LANGUAGES = ('ar', 'he',)  # ('fa', 'fa-IR')
+# Fallbacks for locales that are not recognized by Babel. Bug 596981.
+BABEL_FALLBACK = {'fy-nl': 'nl'}
 
 
 # Override Django's built-in with our native names